diff --git a/images/ubuntu/scripts/build/install-dotnetcore-sdk.sh b/images/ubuntu/scripts/build/install-dotnetcore-sdk.sh
index f450f9636..5a500091c 100644
--- a/images/ubuntu/scripts/build/install-dotnetcore-sdk.sh
+++ b/images/ubuntu/scripts/build/install-dotnetcore-sdk.sh
@@ -9,83 +9,59 @@ source $HELPER_SCRIPTS/etc-environment.sh
 source $HELPER_SCRIPTS/install.sh
 source $HELPER_SCRIPTS/os.sh
 
-extract_dotnet_sdk() {
-    local archive_name=$1
-
-    set -e
-    destination="./tmp-$(basename -s .tar.gz $archive_name)"
-
-    echo "Extracting $archive_name to $destination"
-    mkdir "$destination" && tar -C "$destination" -xzf "$archive_name"
-    rsync -qav --remove-source-files "$destination/shared/" /usr/share/dotnet/shared/
-    rsync -qav --remove-source-files "$destination/host/" /usr/share/dotnet/host/
-    rsync -qav --remove-source-files "$destination/sdk/" /usr/share/dotnet/sdk/
-    rm -rf "$destination" "$archive_name"
-}
-
-# Ubuntu 20 doesn't support EOL versions
-latest_dotnet_packages=$(get_toolset_value '.dotnet.aptPackages[]')
 dotnet_versions=$(get_toolset_value '.dotnet.versions[]')
 dotnet_tools=$(get_toolset_value '.dotnet.tools[].name')
 
 # Disable telemetry
 export DOTNET_CLI_TELEMETRY_OPTOUT=1
 
-# Install .NET SDK from apt
-# There is a versions conflict, that leads to
-# Microsoft <-> Canonical repos dependencies mix up.
-# Give Microsoft's repo higher priority to avoid collisions.
-# See: https://github.com/dotnet/core/issues/7699
-cat << EOF > /etc/apt/preferences.d/dotnet
-Package: *net*
-Pin: origin packages.microsoft.com
-Pin-Priority: 1001
-EOF
-
+# Install dotnet dependencies
+# https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu-decision#dependencies
 apt-get update
+apt-get install --no-install-recommends \
+    ca-certificates \
+    libc6 \
+    libgcc-s1 \
+    libgssapi-krb5-2 \
+    liblttng-ust1 \
+    libssl3 \
+    libstdc++6 \
+    zlib1g
 
-for latest_package in ${latest_dotnet_packages[@]}; do
-    echo "Determining if .NET Core ($latest_package) is installed"
-    if ! dpkg -S $latest_package &> /dev/null; then
-        echo "Could not find .NET Core ($latest_package), installing..."
-        apt-get install $latest_package
-    else
-        echo ".NET Core ($latest_package) is already installed"
-    fi
-done
+if is_ubuntu22; then
+    apt-get install --no-install-recommends libicu70
+fi
 
-rm /etc/apt/preferences.d/dotnet
+if is_ubuntu24; then
+    apt-get install --no-install-recommends libicu74
+fi
 
-apt-get update
+# Install .NET SDKs and Runtimes
+mkdir -p /usr/share/dotnet
 
-# Install .NET SDK from home repository
-# Get list of all released SDKs from channels which are not end-of-life or preview
 sdks=()
 for version in ${dotnet_versions[@]}; do
     release_url="https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/${version}/releases.json"
     releases=$(cat "$(download_with_retry "$release_url")")
-    if [[ $version == "6.0" ]]; then
-        sdks=("${sdks[@]}" $(echo "${releases}" | jq -r 'first(.releases[].sdks[]?.version | select(contains("preview") or contains("rc") | not))'))
-    else
-        sdks=("${sdks[@]}" $(echo "${releases}" | jq -r '.releases[].sdk.version | select(contains("preview") or contains("rc") | not)'))
-        sdks=("${sdks[@]}" $(echo "${releases}" | jq -r '.releases[].sdks[]?.version | select(contains("preview") or contains("rc") | not)'))
-    fi
+    sdks=("${sdks[@]}" $(echo "${releases}" | jq -r '.releases[].sdk.version | select(contains("preview") or contains("rc") | not)'))
+    sdks=("${sdks[@]}" $(echo "${releases}" | jq -r '.releases[].sdks[]?.version | select(contains("preview") or contains("rc") | not)'))
 done
 
 sorted_sdks=$(echo ${sdks[@]} | tr ' ' '\n' | sort -r | uniq -w 5)
 
-# Download/install additional SDKs in parallel
-export -f download_with_retry
-export -f extract_dotnet_sdk
+## Download installer from dot.net
+DOTNET_INSTALL_SCRIPT="https://dot.net/v1/dotnet-install.sh"
+install_script_path=$(download_with_retry $DOTNET_INSTALL_SCRIPT)
+chmod +x $install_script_path
 
-parallel --jobs 0 --halt soon,fail=1 \
-    'url="https://dotnetcli.blob.core.windows.net/dotnet/Sdk/{}/dotnet-sdk-{}-linux-x64.tar.gz"; \
-    download_with_retry $url' ::: "${sorted_sdks[@]}"
+for sdk in ${sorted_sdks[@]}; do
+    echo "Installing .NET SDK $sdk"
+    $install_script_path --version $sdk --install-dir /usr/share/dotnet --no-path
+done
 
-find . -name "*.tar.gz" | parallel --halt soon,fail=1 'extract_dotnet_sdk {}'
+## Dotnet installer doesn't create symlinks to executable or modify PATH
+ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet
 
-# NuGetFallbackFolder at /usr/share/dotnet/sdk/NuGetFallbackFolder is warmed up by smoke test
-# Additional FTE will just copy to ~/.dotnet/NuGet which provides no benefit on a fungible machine
 set_etc_environment_variable DOTNET_SKIP_FIRST_TIME_EXPERIENCE 1
 set_etc_environment_variable DOTNET_NOLOGO 1
 set_etc_environment_variable DOTNET_MULTILEVEL_LOOKUP 0
diff --git a/images/ubuntu/toolsets/toolset-2204.json b/images/ubuntu/toolsets/toolset-2204.json
index 301bd48a2..64753baab 100644
--- a/images/ubuntu/toolsets/toolset-2204.json
+++ b/images/ubuntu/toolsets/toolset-2204.json
@@ -268,10 +268,6 @@
         }
     ],
     "dotnet": {
-        "aptPackages": [
-            "dotnet-sdk-8.0",
-            "dotnet-sdk-9.0"
-        ],
         "versions": [
             "8.0",
             "9.0"
diff --git a/images/ubuntu/toolsets/toolset-2404.json b/images/ubuntu/toolsets/toolset-2404.json
index e1ff9a31f..ce64c7e12 100644
--- a/images/ubuntu/toolsets/toolset-2404.json
+++ b/images/ubuntu/toolsets/toolset-2404.json
@@ -228,11 +228,9 @@
         }
     ],
     "dotnet": {
-        "aptPackages": [
-            "dotnet-sdk-8.0"
-        ],
         "versions": [
-            "8.0"
+            "8.0",
+            "9.0"
         ],
         "tools": [
             { "name": "nbgv", "test": "nbgv --version", "getversion" : "nbgv --version" }